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UNITED STATES PATENT OFFIOE.

EDWARD P. TORREY AND W. B. TILTON, OF NEV YORK, N. Y.

DOOR-SPRING.

Specicaton forming part of Letters Patent No. 18,164, dated September 8,1857; rRessued FebruarylO, 1863, No. 1,404.

To. all whom it may concern:

Be it known that we, EDWARD P. TORREY and WivLB. TrLfroN, of the city,county, and State of New York, have invented a new and ImprovedArrangement of the Parts of the Bracket Employed for Adjusting theUpright Torsional Rod-Spring; and we do here by declare that thefollowing is a full, clear,

'and exact description of the same, reference being had to theaccompanying drawings, forming partof this specification, in which-Figure l, is a side view of a bracket having its parts arranged afterour invention. Fig. 2, is an edge view and Fig. 3, a horizontal sectionof the same. Fig. 4, is a front view of a door with our improvedbracket, and the torsional rod applied to it. Fig. 5, is a perspectiveview of the bracket minus the cog wheel and pivoted stop plate.

Similar letters of reference in each of the several gures indicatecorresponding parts. The object of our invention is to renderpracticable and useful the adjusting bracket ofthe upright torsional rodspring, con trived by T. Riggin; said bracket consisting of a turningsocket with a flange at its upper end, in which iiange a series ofadjusting holes are formed. A bracket thus constructed and arranged'isobjectionable, `first because its adjusting socket and flange is liableto be twisted and sprung up out of its seat, and second because thesmall pin,'which is necessarily used to hold the spring to whatevertension it may be adjusted is continually being snapped or cut oft. Thislast objection is of such a nature as to interfere materially with thesale of the springs and is the cause of almost universal complaint.

The nature of our invention consists in constructing the bracket A, withan o-pen central slot B, in its outer end, and forming a stop, notch orrecess a, in each of the ears C, C, between which the slot is cut; andarranging an adjusting barrel cog wheel D, bet-Ween said ears, and aflat pivoted plate E, on the face of the bracket and in such relation tothe. cog wheel D, and the stop notches a, in the ears C, C, of thebracket A, that by turning it, the plate, down at right angles to thetorsional rod F, which passes through the round holes b, in the ears,and the square hole c, in the cog wheel, said rod will be firmly held,through the cog wheel D, notches a, a, and plate E, from moving, orretained at any tension to which it may have been set.

It may be evident that by placing the adjusting cog wheel between twoears, instead of on top of the bracket, as in Riggins arrangement allchance of the rod and cog from twisting and springing up out of its seatis completely avoided, as the ears serve to retain it in a horizontalposition. And by having the cog thus arranged and the notches formed inthe ears, a broad, stiff stop plate can be used in place of a pin, as inRiggins arrangement, and thus all liability of the spring losing itstensio-n by the snapping or cutting off of the stop device avoided.lVith Riggins arrangement the pins cannot be made strong enough to bearthe.

strain without making the contrivance too clumsy, and consequentlyjutting out from the door so much as to make it impracticable, and evenif this were done the pin would very often be wrenched off. Now ourcatch is not only strong enough in itself, but is supported by thenotches a, a, in the bracket, on both sides, and consequently can bearthe utmost tension, as all the strain is removed from the pivot to thestop notches.

7e do not claim any of the parts separately considered, neither do weclaim the combination of a stop pin and adjusting device applied forregulating the upright torsional rod spring irrespective of thearrangement of said parts but That we do claim as our invention, and asa necessary auxiliary to render such adj usting device practicable anduseful, is-

The arrangement of the adjusting cog Wheel between the two notched earsof the bracket, and the pivoted stop plate on the face of the bracket,and in such relation to said cog wheel and the notches in the ears, thatthe whole operating together as herein specified will form a firm andsubstantial adjusting device for the upright torsional rod spring, asset forth.

EDW. P. TORREY. WM. B. TIL'ION. Witnesses:

Bissn'r BARQUET, JULiUs J. LEE.

[FIRST PRINTED 1912.]

